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Discussion Starter · #1 ·
Can someone confirm for me which wires are the positives and the negatives for the two rear 6x9 speakers in a 1998 NG900 coupe? For example, the driver's side (US left hand drive) set color is purple and purple with a white stripe. I can't find a decent wiring diagram online anywhere...

Thanks,

AB
 

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Purple Right Rear +
Purple/Black Right Rear -

Green Left Rear +
Green/Black Left Rear -

Taken directly from the Crutchfield wiring diagram.

I will be taking my head unit out next week to fit a trim plate. But I hooked mine up with purple for right and green for left. Everything is working good.
 

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http://www.kolumbus.fi/richard.bevan/saab/saab93/menu_bar.html

Perhaps this will be of assistance..looks good..
All I know about the two leads to the speakers is that if they are switched, the sound quality will suffer.., on the short term, I do not think that the speakers will be harmed..
Your multimeter could be tried to see what each lead has....in the way of volts or amps..
 

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Discussion Starter · #6 · (Edited)
After fixing the driver's side speaker wire (which is actually brown, not purple), I checked the passanger's side. When I got into that, the colors made no sense, so I went back to the internet. After a very long time, I found this site:
http://www.the12volt.com/installbay/vehiclewiring/1/yeard/Saab.html

For futrue references on the wiring diagram for 1998 Saab NG900 Stereo Wiring:

Constant 12V+ Red
Switched 12V+ Blue
Ground Black
Illumination n/a
Dimmer Gray/White
Antenna Trigger Black/White

Left Front (+)Light Brown
Left Front (-)Light Brown/Gray
Right Front (+)Brown/Black
Right Front (-)Brown/Red

Left Rear (+) Brown
Left Rear (-) Brown/White
Right Rear (+) Black/Green
Right Rear (-) Black/White

Nice thing about this by the way, it that they seem to be right. Each of the color combinations matched up with my car's wires exactly. I don't know why car makers can't just use good ol' red and black :D

Adam
 

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After fixing the driver's side speaker wire (which is actually brown, not purple), I checked the passanger's side. When I got into that, the colors made no sense, so I went back to the internet. After a very long time, I found this site:
http://www.the12volt.com/installbay/vehiclewiring/1/yeard/Saab.html

For futrue references on the wiring diagram for 1998 Saab NG900 Stereo Wiring:

Constant 12V+ Red
Switched 12V+ Blue
Ground Black
Illumination n/a
Dimmer Gray/White
Antenna Trigger Black/White

Left Front (+)Light Brown
Left Front (-)Light Brown/Gray
Right Front (+)Brown/Black
Right Front (-)Brown/Red

Left Rear (+) Brown
Left Rear (-) Brown/White
Right Rear (+) Black/Green
Right Rear (-) Black/White

Nice thing about this by the way, it that they seem to be right. Each of the color combinations matched up with my car's wires exactly. I don't know why car makers can't just use good ol' red and black :D

Adam
This coding is wrong for the left rear. Positive always goes to the terminal numbered 2 on the connector. I verified the coding on the back of the radio. Correct coding is:

Left Front (+)Light Brown
Left Front (-)Light Brown/Gray
Right Front (+)Brown/Black
Right Front (-)Brown/Red

Left Rear (+) Brown/White
Left Rear (-) Brown

Right Rear (+) Black/Green
Right Rear (-) Black/White
 

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If the wires are reversed, the speaker will pull air in instead of pushing air out. This will greatly reduce the amount of air that the speaker moves... Ron
When I first installed the speakers I didn't have a schematic, so I assumed that 1 was positive and 2 was negative. 50/50 shot and I got it wrong. Sounded washed out. When I found this thread, I started changing it, but the left rear didn't jive.
 

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I ended up having a similar problem.... unfortunately in my case the wires were grounding out!, so i went ahead and ran new larger speaker cabling to the rear.... took a while but it was all worth it in the end... no more small gauge wire for a good sound system.
 
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